51550302320 has 160 divisors (see below), whose sum is σ = 135303125760. Its totient is φ = 18102712320.

The previous prime is 51550302317. The next prime is 51550302337. The reversal of 51550302320 is 2320305515.

It is a self number, because there is not a number n which added to its sum of digits gives 51550302320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3360107 + ... + 3375413.

It is an arithmetic number, because the mean of its divisors is an integer number (845644536).

Almost surely, 2^51550302320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51550302320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67651562880).

51550302320 is an abundant number, since it is smaller than the sum of its proper divisors (83752823440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51550302320 is a wasteful number, since it uses less digits than its factorization.

51550302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15463 (or 15457 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

Adding to 51550302320 its reverse (2320305515), we get a palindrome (53870607835).

The spelling of 51550302320 in words is "fifty-one billion, five hundred fifty million, three hundred two thousand, three hundred twenty".